查询词典 plane curve

Originally the plane in such contexts was imagined as flat, hence the choice of the word plane; in practice this surface to curve slightly in order to work.

起初，在这些上下文中的机翼被想像成是平坦的，因此选用了单词plane；实践中为了运行机翼表面稍微有些弯曲。

The plane lifts quickly, pass through aerosphere, at this moment air man shuts engine, passenger and unit staff have weightlessness feeling, after this kind of case lasts about two minutes, the plane returns aerosphere, the plane is quickened afresh.

飞机迅速升高，穿越大气层，这时飞行员关闭发动机，乘客和机组人员有失重感，这种情形持续大约两分钟后，飞机返回大气层，飞机重新加速。

The common method for obtaining the angle of the plane figure to projection plane is through the right-angled triangle method after getting the double-face projection of the plane figure on the basis of the conception of maximum oblique line.

求平面图形对投影面的倾角，通常需要知道平面图形的两面投影，利用最大斜度线的概念，通过直角三角形法求得。

In the second chapter, elementary theories and ideas of one step forming inverse approach were described and warped modification method, implemented by Cook, was introduced into one step forming simulation and based on idea of surface spreading; new quadrilateral element modification arithmetic was put forward. By spreading warped quadrilateral onto plane in local coordinate system, a plane quadrilateral element whose shape and area were equal to original warped quadrilateral element was gotten and internal force vectors of four nodes and stiffness matrix of elements were improved to increase precision of simulations on this plane element.

第二章从一步成形逆有限元法的基本理论和思想出发，将Cook基于弹性理论的四边形单元的翘曲修正算法引入基于塑性的一步成形，并且基于曲面展开的思想，本文提出一种新的四节点单元翘曲修正方案，通过把翘曲的单元展开的方法在局部参考系中得到一个与实际翘曲单元的形状与面积非常接近的平面单元，在该平面单元中进行单元刚度及内力向量的计算，进一步改善模拟结果的精度。

Particular configurations on bedding planes and on the surface perpendicular to the bedding planes lead to different explanations for the genesis of these silty dykes:(1) they are considered as the oldest trace fossils of metazoan according to the spindle-crack of siltstones on the bedding plane and the sand-filling tube configurations on the surface perpendicular to the bedding plane;(2) they are considered as the liquefied sand-veins induced by earthquake according to the sinuous configuration of siltstone dykes on the surface perpendicular to the bedding plane and the obvious liquation feature.

由于该粉砂岩岩墙在层面上和层内具有特别的形态，因而对其成因具有多种解释：在层面上呈纺锤状粉砂岩裂缝以及在层内呈砂质充填管形态，从而被认为是最古老的后生动物遗迹化石；在层内呈弯弯曲曲的粉砂岩岩墙以及明显的流体化作用特点，所以又被解释为地震振荡作用形成的液化砂岩脉。

Evaluating the damage efficiency of the carrier plane groups under the attacking of multiple-submunition is a complicated problem. A rapid method was provided to evaluate the damage efficiency issue based on vulnerability analysis of the carrier plane group and using the pixel-simulation method, and a computation simulation model of the carrier plane groups under the attacking of submunition was established.

对于采用子母弹攻击航空母舰舰载机群的毁伤效果分析问题，存在相当大的难度，为对子母弹攻击舰载机群毁伤评估提供一个快速、初步的结果，在对舰载机群进行易损性分析的基础上，采用像素仿真的模拟方法，实现了多弹攻击下舰载机群毁伤效果的计算机模拟计算。

The third lens group includes a 3rd-group 1st meniscus lens having a concave surface on the image plane, a 3rd-group 1st compound lens formed by joining a 3rd-group 1st negative lens having opposite concave surfaces and a 3rd-group 1st positive lens having opposite convex surfaces, and a 3rd-group 2nd meniscus lens having a convex surface on the image plane side arranged in that order from the screen side toward the image plane side.

第三透镜组包括一个在像平面侧具有凹表面的第3组第一凹凸透镜，一个由具有相对凹面的第3组第一负透镜和一个具有相对凸面的第3组第一正透镜结合的第3组第一组合透镜，和一个在像平面侧具有凸表面的第3组第二凹凸透镜，它们以从屏幕侧到像平面侧的顺序布置。

First, determine the location of lines plane by the plane line design In the topographic map, Then draw the ground line and design the plane Coordinate program.

首先在地形图上进行平面线路的设计，确定出线路的平面位置，并据此点绘出地面线，并进行平面坐标计算程序的设计。

This article used the truncation mark law to discuss the common quadratic surface on the coordinate plane projection, based on this gave by the surface encircles three-dimensional asks the law on the coordinate plane projection one kind, this kind asked method the superiority lay in does not draw the range of integration graph also to be able to determine it on the coordinate plane projection.

本文利用截痕法讨论了常见二次曲面的在坐标面上的投影，在此基础上给出由曲面所围立体在坐标面上的投影的一种求法，这种求法的优越性在于不画出积分区域图形也能确定它在坐标面上的投影。最后以实例说明这种求投影的方法在计算三重积分中的应用。

Mainly uses in flowered key hole broachings, the single key hole broaching as well as the plane broaching, the different shape surface broaching, the plane tooth profile broaching, the stair surface broaching, each kind of connecting rod and so on round hole broaching, different shape through hole broaching, each kind of gear the broaching, each kind of rack broaching, each kind of synchromesh broaching, each kind of brake pliers broaching, in each kind of air conditioning tubing cross valve seat the plane and so on.

主要用于圆孔拉削、异形通孔拉削、各种齿轮等花键孔拉削、单键孔拉削以及平面拉削、异形面拉削、平面齿形拉削、台阶面拉削、各种连杆拉削、各种齿条拉削、各种同步器拉削、各种制动钳拉削、各种空调四通阀座内平面等。

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。